Who has painted their engine with a spray gun?

I recently sprayed mine with cheap rustoleum out of a spray gun and jap drier for a hardener but this is by no means a show car its just for a farm truck but it will be interesting to see if it holds up looks good for now.
I would defiantly use a higher quality automotive paint for something nice i wouldn't worry about the high heat so much as cars get pretty hot in the sun and it doesn't burn off